Sealed valve mechanism for liquid-dispensing systems



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1 "mail Jan. 13,l 1931. A, T, wAKEFlELD 1,788Q786 n SEALED VALVEMECHANISM FOR LIQUID DISPENSING SYSTEMS Filed Oct.` 22. 1927 2Sheets-Sheet` 2 Patented Jan. '13, 1931 ,N STATES PATENT OFFICE. i

hmmm 'moms Waxman, l orl Barmen-a fmvnmn, 'Assienon AMEBICANQIL COMPANY,ormrrmona, maman v I asoline,etc., from illin stations; and, is 4.

`slmminvmtvii nmmimsmron mourn-meramente svsrm Y p Appnqaaon meacapturas, 1987.@ serial 1ro. ananas. c

This application is a continuation Ain part of my copending applicationfor liquid measuring systems, Serial No. 157,855,- filed 'December 29,1926.' p y i kThe ,'nvention forming the subject matter ofthepresentiapplication relates kbroad,- lyjto the dispensingofliquid fuels,such as esiA ned primarilyto e vect accurate and spee y measurement pand, dispensing ,of

liquids from underground storage tanks.

In the fuel 'dispensing systems in comy mon use jat present,4 thepipingy and valve mechanism "leading to the,l underground` storage,tanks is'usally embedded in the earth 'between the tank and the groundlevel. kWhen,l the'- `pumping mechanism below 'groundfetso'ut of order,it is then neces ig up the ground aroundl the tank filling ipe in orderto remove or repair the,v de ective' parts; otherwise a large manholemust be provided from lthe tank to thel ground level around the filling,pipe

sary tov anda large manhole cover used to ycover the surface opening ofthe manhole.`

It is one of the main objects of the present invention to construct thesaid pipe and the cap of special construction and embodying' a' valvemechanism contained therein, so that all'the mechanism maybe easilyremoved from the 'said pipe without breaking lthe pipe-embedding ground,or the pipe, when 1t becomes `necessary to ei'ect repairs in thedispensing mechanism.

for use in systems dispensing very high invention valso lcomprises afiller and closure ysealing valve having lparts adapted to ybe sealed toprevent unauthorized illin of the tank or tampering 'with the sai valvemechanism.

Another objectl of the invention resides in the `making of the severalvalves andother removable parts in the pipe, of progressive.- lyincreasing sizes frombott'om to top of v the filling pipe, so that thelower positioned parts may pass readily and freely through. theapertures seating the upper valves', etc.l

Another and most important object of the As' this invention is prlmarilydesigifiedy Vinvention 'resides in the meansfor removing the removableparts from the vfilling pipe.

whereby a single key may be used to seat.Y

and lock or remove `all valves and otherremovable parts from any.position onythe illln pipe.

vOt erobjects of the invention will @me .apparent as thereof proceeds.

' In the drawings f ,y n

Figure 1 isa central vertical section taken the detailed descriptionlengthwise through the' foot valve mechaf nism and pipe connected to anunderground storage tank; n A v Figure2 is afragmentary .vertical sec-vtion of the closure cap shown in Figure 1,

but Witha partthereof removed, and show-` ing a specially constructedkey `vlWrench adapted to engage and removehallfremovable parts securedin said pipe; l f p rFigure B is a fragmentary vertical section of theclosure cap, but showing the closure and ,av` sealing [plug removed andshowing the said key wrench in the'process of removing a Avacuum plugthrough the sealing valve; 'l l ,f

Figure 4 is an elevation of the `said key Wrench; f

Figure 5 is a horizontal section on the line Figure 10 is atopfplanofthe vacuum` plu ,l illustrating vthe means toco-operate wit .the keywrench for removal of allplugs of this type.

an elevation of the parts of l -As shown in Figure l, the underground`storage tank 1 ,has a dispensin ipe2 extending thereinto, and secure y t'creto by any suitable co-operating fittings 3 and 4 screwthreaded end10 of a pipe 11 which has its upper end also externa y screwthreaded tothe correspondingly threaded lower end 12'of a closure andsea'l valvecasing k13 having the top thereof ordinarily 'arranged flush with theground level L.

`In m 157,855, have shown the check valve mechanism as arranged at thefoot of the discharge pipe and wholly within the tank. In the presentcase, I have arranged the check valve mechanism in the dischar e pipe'and outside the tank. In order to o viate chatter in the Vdischargeoperation, it is` frequently advisable to use two or more of such valvesin series, and I have designed the valve mechanism, in this instance, sothat any desired number of valves may be attached to each other inseries, and the whole series inserted or removed bodily from thedischarge pipe.

The most convenient location for arranging these check valves lies invthe T-fitting 6 at its point of connection with the lateral projection 7where the said `fitting is provided with an internally screwthreadedpart 14. A cylindrical plug l5 has an externally screwthreaded flange 16adapted to engage and seat in. the said part 14. The plug 15 is providedwith a beveled seat for 17 for" the correspondingly beveled periphery 18of the head 19 of a poppet valve 20. A bridge 21 extends transversely ofthe plug 15 and is provided with a central aperture 22l in which thestem 23 of valve 20 is guided. A nut 24 threaded on to the end of stem23, and secured thereon by a cotterpin 25, prevents accidental removalof valve 2O from the valve plug 15.

The upper end of the valve plug 15 is provided with a pair of T-shapedsegmental .Y projections 26 arranged diametrica'lly opposite each other.Each of said projections comprises a vertical part 27 having a pair ofarms 28 and 29 extending from opposite sides of the top thereof, andlugs 30 depend from the outer end of each arm, to form recesses 31adapted to receive either of the pins 32 on the rod 33 of akey wrench ofpeculiar construction. Y

The key wrench (see Figure 4) comprises the rod 33 having one endprovided with a prior application, Serial No.v

cross head 34 to facilitate turning thereof, and having a cylinder 35screwthreaded on to its lower end and fixed thereto by set screws 36.Below the end of rod 33, the cylinder is shaped to provide a ange 37adapted to receive slidably the stem 38 of a machine screw 39, which isscrewed into one'end of a plunger 40.- The plunger 40 [its snugly andslidabl in the cylindrical recess 41, and the heacl42 of screw 39engages the flange 37tolimit the movement of plunger 40 outwardly of itsrecess 41, coil spring 43 surrounding the screw 39 and a utting atopposite ends against flan e 37 and top of plunger 40, serves to hol theplunger 40 yielding projected from the cylinder. n

The cylinder 35 'of the key wrench lits snugly and rotatably between thediametrically opposed arcuate arms ,28 and 29 and the plunger 40 thereofis normally rojected far enough from its cylinder to orce the pins 32into 'seating engagement in recesses 31 when the wrench is positioned toeffect this engagement and the end ofthe plunger 40 engages the head 19of valve 20.

The slots 30 formed by separating the adjacent ends of arms 28 and 29,are adapted to permit entry of the pins 32 between the ends of lugthree. In order to effect interlocking engagement of 'pins 32 withrecesses 3l, the cylinder 35 is inserted between the opposed arms 28 and29 with the pins 32y in the slots 30 between ends of arms 28 and`29,downward pressure is applied to the rod 33 to force the cylinder 35toward the head of valve 20, against the resistance of spring 43, untilthe pins 32 are below the lowest ends of lugs 30. 1 The wrench is thenturned in either direction until the opposite pins 32 strike the edgesof the parts 26. The downward pressure on rod 33 is then released, andthe spring 43 acting on plunger 40 forces the pins l32 upwardly into thediagonally opposite recesses 31. The. cross head 34 may then be turnedto efect either insertion or removal. of plug 15 in or from its seat inthe fitting `6. The lower end o valve plug 15 is internallyscrewthreaded to receive the external screwthreads on a flange 44 formedon the upper end of a cylindrical valve casing 45. Thevsaid upper endisbevelled to form a seat for a poppet valve 46 similar in every respect'to the valve 20 and similarly guided and limited as to reciprocatemovement by the centrally apertured bridge 47 and nut 48. The lower endof valve casing 45 is also internally screwthreaded, f and is adapted toreceive a valve casing and mechani'sm similar in every respect to thatlast described. The upper valve plug alone has the wrench yengaginglugs; all the other valve casings and mechanisms which may be connectedto each other and suspended j from said plug are identical in everyrespect.

The vacuum plug 49 is screwthreaded into fitting 6 at the pointwhere thelupper end of connection 7 enters litting 6, in order to preventinaccuracies in measurement caused by variation in the pressures exertedby Thetop of this plug is also provided with f the wrench receiving lugs26 on the topof 4 j Y mechanism from the dlscarge p1pe,3the

lugs 50 and 51 similar in every respect to valve plug 15, and areadapted tol be similarly engaged to efect removal or insertion of plug49 from or in its position in fitting 6. A

The closure casing 13 at the ground level is provided with an annularflange 52 spaced slightlyl from the top of the casing and forming arecess 53 to receive the `closure plate 54. The flange 52 is provided'with diametrically opposite slots 55 and 56 ladapted to permit thepassage of the lock` ing bar 57 therethrough to the underside of ilange52. The bar 57 is screwthreaded onto a correspondingly screwthreaded rod58 depending integrally from the bottom of plate 54 and a lock nut 59 onsaid rod 58 locks the bar 57 in proper position on rod 58 to ensure theplate 54 being drawn down rmly on to its seat when the said plate and fbar are rotated to make the bar engage the underside of said flange 52.

The top of plate 54 is provided at its center with a s uare recess 60having one side 61 thereof s ightly undercut to receive the projection62 formed on one side of the rectangular end 63 of plunger 40 which isheld against rotation by 'the inner Aend 64 of one ofthe screw pins 32slidably engaging a slot 65 formed lengthwise in said plunger. The oeration of this squared end I square in locking the c osure late 54 onits seat 53 or` removing it there rom will be, obvious from inspectionofthe drawing. The projection 62 engaging recess 61 enables theoperatorto lift the plate 54 by the end of plunger 63 without having tobend over and remove it by hand.

f Immediately below the flange 52, the .t

casing 13 is provided with one element 66 of Va sealing valve which issecured toy said casing 13 by a dowel pin 67. The element 66 is recessedto form a seat for the sealing plug 68, andsaid element 66 andfplug 68are provided with apertured projections 69 and 7 0 adapted to berelatively rotated until the apertures 71 and 72 register,V in whichposition a wire 73 may be passed through the registerin apertures andthe ends thereof secure together as by a seal 74 of .an usual type.

he (plug 68is provided centrally with a recess 75, similar in everyrespect t-o the recess 60 in the closure cap 54, adapted to receive thesquared end 63 of the key wrenchy to eEect removal of `said lplu fromits seat and`rotation.fthereofon sai p seat when itis' foundnecessary ordesirable to lock'the plug, on its seat.V

They element 66 is also provided'w'itihy pair-, of diametri'callyoppositev L-slots 76 l j adapted` -to` receiver ins -77and 78 suitablsecured toor'forme Vonplug-;68,.and toyloc l the saidfelement and.plugiagainst axial'sepsv aration.l f, -f In ,order toy permitreadremoval of the several valve and plugse'ats are made vof such j-size as`"to permit the. passage Ytheref 'through ,of every `removable elementbelow.

it. Thus thefplug49 'is larger in-diameter than plugl15, plug 68 islarger than plug V49,

and theclosure pla'te' 54 islargeenough to permitthe` removal of all theparts, below? it.

In this systemfthe filling.- pipe for the storageytanklis arranged nearthe f end thereof remote from the discharge pipe 2, and `is providedwithv a sealing closure mechanism similar to that at'top of-thedischargepipe 11. These two seals therefore prevent unfrom the storage tank, `andoperate as an eilective check to ensure that nothin but the propercontents are stored in ang dispensed from the system.

Having thus described my invention, what I claim v'is 1 1. A key forinterlocking engagement with pipe plugs of the type described andvcomprising a rod havinga cylinder at one kauthorized filling or removalof contents end thereof, a piston slidable in said cylinder `and havingpart normally projecting therefrom, and yieldingmeans for holding saidpart projected. v.

2. A key. for interlocking engagement with pipe plugs .of` the'typedescribed andy side opening intermediate its ends; a valved plug havinga seat in the pipe on one side ofthe side opening-and having a pair ofopposed T 'shaped' wings with lugs extending from their tips to providenotches behind the lugs; and a solid plug, having a larger seat than thefirst, seated in the pipe on the other side of the side opening, havinga similar pair of wings, so that both plugsl maybe grasped by a suitablekey for inserting or removing, the Afirst named passing throughthe seatof the second. f

4.\In a liquid discharge, the combination of ya pipe for connectionl toa tank, having a side opening intermediate its ends; a valved 4 meshesplug having a seat in the pipe on one side of the side opening andhaving a' pair lof opposed vT shaped Wings with lugs extendingfrom theirtips to provide notches behind the lugs,'the wings forming a. circularconfiguration onthe Illugs; a solid plug, having a larger seat t an thefirst, seated in the pipe-on the other side oi the side opening; aving asimilar pair of wings; and a ey comprising -a stem bearingv a. c linderadapted to enter the circular conguration of the wings, with pinsadapted to entersaidy notches and aplunger partly ro"ected from thecylinder by a spring for ol inv the pins in the notches.

5. T e same structure as clairn 3; a closure for the end ofthe pipenearest the solid plu having a polygonal socket in its' face; an akeyhavinga polygonale'nd and side pins-for engaging the yclosureand the twoplugs.v y

lIn testimony whereof I aHiX mysi vature. I

ARTHUR THOMAS WAKEFI LD.

